Generate PDF uses the shell utility wkhtmltopdf to serve a PDF file to a user from HTML. In other words, rather than dealing with a PDF generation DSL of some sort, you simply write an HTML view as you would normally, and let GeneratePdf take care of the hard stuff.
Generate PDF has been verified to work on Ruby 1.8.7 and 1.9.2; Rails 2 and Rails 3
First, be sure to install wkhtmltopdf. Note that versions before 0.9.0 have problems on some machines with reading/writing to streams. This plugin relies on streams to communicate with wkhtmltopdf.
More information about wkhtmltopdf could be found here.
win32-opne3 gem [http://rubygems.org/gems/win32-open3] Next: Download plugin and paste it in vendor/plugins folder. script/generate generate_pdf
class ThingsController < ApplicationController
def show
respond_to do |format|
format.html
format.pdf
end
end
end
In Url just specify in the end .pdf example http://www.example.com/show/2 in pdf http://www.example.com/show/2.pdf
class ThingsController < ApplicationController
def show
end
end
class ThingsController < ApplicationController
def show
respond_to do |format|
format.html
format.pdf do
render :pdf => 'file_name',
:template => 'things/show.pdf.erb',
:layout => 'pdf.html', # use 'pdf.html' for a pfd.html.erb file
:wkhtmltopdf => '/usr/local/bin/wkhtmltopdf', # path to binary
:show_as_html => params[:debug].present?, # allow debuging based on url param
:orientation => 'Landscape', # default Portrait
:page_size => 'A4, Letter, ...', # default A4
:save_to_file => Rails.root.join('pdfs', "#{filename}.pdf"),
:save_only => false, # depends on :save_to_file being set first
:proxy => 'TEXT',
:username => 'TEXT',
:password => 'TEXT',
:cover => 'URL',
:dpi => 'dpi',
:encoding => 'TEXT',
:user_style_sheet => 'URL',
:redirect_delay => NUMBER,
:zoom => FLOAT,
:page_offset => NUMBER,
:book => true,
:default_header => true,
:disable_javascript => false,
:greyscale => true,
:lowquality => true,
:enable_plugins => true,
:disable_internal_links => true,
:disable_external_links => true,
:print_media_type => true,
:disable_smart_shrinking => true,
:use_xserver => true,
:no_background => true,
:margin => {:top => SIZE, # default 10 (mm)
:bottom => SIZE,
:left => SIZE,
:right => SIZE},
:header => {:html => { :template => 'users/header.pdf.erb', # use :template OR :url
:url => 'www.example.com',
:locals => { :foo => @bar }},
:center => 'TEXT',
:font_name => 'NAME',
:font_size => SIZE,
:left => 'TEXT',
:right => 'TEXT',
:spacing => REAL,
:line => true},
:footer => {:html => { :template => 'shared/footer.pdf.erb', # use :template OR :url
:url => 'www.example.com',
:locals => { :foo => @bar }},
:center => 'TEXT',
:font_name => 'NAME',
:font_size => SIZE,
:left => 'TEXT',
:right => 'TEXT',
:spacing => REAL,
:line => true},
:toc => {:font_name => "NAME",
:depth => LEVEL,
:header_text => "TEXT",
:header_fs => SIZE,
:l1_font_size => SIZE,
:l2_font_size => SIZE,
:l3_font_size => SIZE,
:l4_font_size => SIZE,
:l5_font_size => SIZE,
:l6_font_size => SIZE,
:l7_font_size => SIZE,
:l1_indentation => NUM,
:l2_indentation => NUM,
:l3_indentation => NUM,
:l4_indentation => NUM,
:l5_indentation => NUM,
:l6_indentation => NUM,
:l7_indentation => NUM,
:no_dots => true,
:disable_links => true,
:disable_back_links => true},
:outline => {:outline => true,
:outline_depth => LEVEL}
end
end
end
end
By default, it will render without a layout (:layout => false) and the template for the current controller and action.
If you need to just create a pdf and not display it:
# create a pdf from a string
pdf = GeneratePdf.new.pdf_from_string('<h1>Hello There!</h1>')
# or from your controller, using views & templates and all Generate_pdf options as normal
pdf = render_to_string :pdf => "some_file_name"
# then save to a file
save_path = Rails.root.join('pdfs','filename.pdf')
File.open(save_path, 'wb') do |file|
file << pdf
end
You must define :media => :all to CSS files.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<%= stylesheet_link_tag "pdf",:media => "all" -%>
<%= javascript_include_tag "number_pages" %>
</head>
<body onload='number_pages'>
<div id="header">
<%= image_tag 'mysite.jpg' %>
</div>
<div id="content">
<%= yield %>
</div>
</body>
</html>
A bit of javascript can help you number your pages, create a template or header/footer file with this:
<html>
<head>
<script>
function number_pages() {
var vars={};
var x=document.location.search.substring(1).split('&');
for(var i in x) {var z=x[i].split('=',2);vars[z[0]] = unescape(z[1]);}
var x=['frompage','topage','page','webpage','section','subsection','subsubsection'];
for(var i in x) {
var y = document.getElementsByClassName(x[i]);
for(var j=0; j<y.length; ++j) y[j].textContent = vars[x[i]];
}
}
</script>
</head>
<body onload="number_pages()">
Page <span class="page"></span> of <span class="topage"></span>
</body>
</html>
Anything with a class listed in "var x" above will be auto-filled at render time.
You can put your default configuration, applied to all pdf's at "generate_pdf.rb" initializer.
Andreas Happe's post Generating PDFs from Ruby on Rails